Flight number record

OO 4784

SkyWest Airlines · Fort Wayne to Chicago

Route: FWA → ORD
Departs: 13:35
Flights: 358
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4784, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.

OO 4784 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is close to two hours behind schedule. Build slack into anything you connect to. That rests on 358 flights, with a median arrival 2 minutes early.

The national on-time rate over the same period is 77.6%, so OO 4784 runs 10 points behind the country as a whole. Across a thousand flights that is about 98 extra late arrivals.

On time

67.8%

Arrivals under 15 minutes late, of 345 completed flights

Avg delay

106 min

Across delayed arrivals only, not all flights

Cancelled

3.63%

National rate is 1.81%

1 hour+ late

14.8%

National rate is 8.1%

These figures cover 358 flights between July 2025 and June 2026. Beyond the headline rate, 14.8% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When OO 4784 flies

OO 4784 flies FWA to ORD without a single fixed slot. Its most common scheduled departure was 13:35, used on 61 of 358 flights, with 13:39 (58 flights) and 13:16 (56 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:3561 flights17.0%
Departs 13:3958 flights16.2%
Departs 13:1656 flights15.6%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 13:35 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and OO 4784 runs 11 points worse at 67.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 4784 next to FWA to ORD

Every carrier on FWA to ORD combined arrived on time 66.2% of the time across 2,695 flights, so OO 4784 is 2 points ahead of it. SkyWest flew 2,361 flights on the same city pair under all its flight numbers, including this one, and those ran 65.6% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 11 points.

OO 4784 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4784thin sample	358	67.8%	106 min	3.63%	C−
All SkyWest Airlines on FWA–ORD	2,361	65.6%	105 min	4.62%	C−
All carriers on FWA–ORD	2,695	66.2%	102 min	4.56%	C−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4784 quarter by quarter

OO 4784 did not run the same all year. Its best quarter was Jul–Sep 2025 at 75.6% on time and its weakest Apr–Jun 2026 at 61.0%, a swing of 15 points on roughly 90 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202592 flights75.6%
Oct–Dec 202591 flights66.7%
Jan–Mar 202690 flights67.4%
Apr–Jun 202685 flights61.0%

Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4784 ranged from 62.7% on Friday to 72.9% on Monday. With about 51 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 4784 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 12,000 reported delay minutes.

Late-arriving aircraft
39%
National Airspace System
31%
Carrier
21%
Extreme weather
10%

39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 12,000 reported delay minutes here, that single category outweighs weather by 4 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 11,722 delay minutes reported on OO 4784.

Cancellations run at 3.63%, against 1.81% nationally. That is roughly one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 14.8% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The same number turns up on one other city pair in the data, including ORD to CRW (6), but none flew often enough under OO 4784 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to FWA to ORD only.

One caution: this is a thin sample. 358 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking OO 4784

For a booking, the cancellation rate is the figure to plan around on OO 4784: 3.63% of its 358 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.

Where to go next

A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures